Do you have a dog or have one you can borrow? take him to were you shot him and let him get some good scent and LET HIM take up the trail. Don't pull him in the direction of the deer let him go that way on his own. If after a while he hasn't found it take him off lead and let him run around. I have found 2 deer doing this. If you do have a dog even if you find the deer next time take him out and let him track it and find it that way he knows whats going on next time (hopefully there won't be but SHtuff happens).